我国不同沉积类型储集层中的储量和可动剩余油分布规律  

Distribution pattern of OOIP and remaining mobile oil CM(83mm] in different types of sedimentary reservoir of China.

作　　者：徐安娜[1] 穆龙新[1] 裘怿楠[1] 

机构地区：[1]中国石油天然气集团公司石油勘探开发科学研究院

出　　处：《石油勘探与开发》1998年第5期41-44,共4页Petroleum Exploration and Development

摘　　要：研究中国不同沉积类型储集层中的储量和可动剩余油分布规律，了解储集层非均质性对剩余油的控制作用，是储集层精细描述和不同类型储集层剩余油挖潜的基础。按河流相、三角洲相、扇三角洲相、滩坝相、湖底扇（浊积）相、冲积扇相和基岩（包括变质岩、火山岩和岩浆岩）七大类储集层，研究了中国１５个主要油区７１个油田的原始地质储量、水驱标定采收率、水驱油效率和可动剩余油储量等油藏参数在各类储集层中的分布规律。统计结果表明，中国已探明和投入开发储量的９２％赋存于陆源碎屑岩储集层中；各类陆源碎屑岩储集层中的原始地质储量分布情况是：河流相４２．６％，三角洲相３０％，扇三角洲相５．４％，滩坝相１．４％，湖底扇（浊积）相６．３％，冲积扇（冲积—河流）相６．４％，基岩８％。各类碎屑岩储集层中可动剩余油储量的分布情况是：河流相４８．６％，三角洲相２７．６％，扇三角洲相５．５％，滩坝相１．８％，湖底扇（浊积）相９．６％，冲积扇（冲积—河流）相６．９％。此外还分析对比了各类碎屑岩储集层的平均水驱标定采收率、平均水驱油效率。结果表明，三角洲相、扇三角洲相和湖底扇相三大类储集层是中国今后储集层研究的重点及调整挖潜的主要对象。图１表３参４（邹冬平摘）In order to understand the distribution pattern of OOIP and remaining mobile oil in different types of sedimentary reservoir of China, to know the control action of reservoirs heterogeneity to the distribution of remaining oil , and to provide the foundation of the fine reservoir description and the recovery potential of remaining oil in different types of sedimentary reservoir , we divide the reservoirs in China into 7 types which include fluvial facies, delta facies, fan delta facies, beach and dam facies, sublacustrine fan facies, alluvial fan facies and basement rock (include metamorphic rock, magmatic rock, volcanic rock), and research the distribution pattern of the reservoir parameters in different types of sedimentary reservoirs which contain the OOIP waterflooding recovery factor, water sweep efficiency, and remaining mobile oil and so on in 71 oil fields that belong to 15 main oil regions of China. Analyses show that the reserves in the reservoirs of terrigenous clasolite take up 92% of exploitation reserves and recoverable reserves in China, of which the fluvial facies and delta facies reservoirs take up 42.6% and 30% of total OOIP separately, and sublacustrine fan, fan delta facies, alluvial fan and beach dam takes 6.3%, 5.4%, 6.4% and 1.4%, respectively. The percentage of remaining mobile oil in the different types of clasolite reservoir is 48.6% for fluvial facies reservoirs, 27.6% for delta facies reservoirs, 9.6% for sublacustrine fan reservoirs, 6.9% for alluvious fan reservoirs, 5.5% for fan delta facies reservoirs, 1.8% in beach dam reservoirs. Research indicates that the reserves in fluvial facies and delta facies and fan delta facies are the focuses for reservoir research and the main targets for tapping recovery potential.

关 键 词：储集层 沉积类型 储量 剩余油分布 油气藏 

分 类 号：P618.130.2[天文地球—矿床学]